Research On Green Wave Coordinated Control Method Of Urban Arterial Roads Considering Variability

With the rapid development of my country’s urbanization process,traffic congestion has increasingly become a bottleneck that restricts urban social and economic development.In particular,the congestion and chaos caused by the rapid increase in traffic flow on the main urban roads severely restricts the normal performance of urban functions.Therefore,how to optimally manage and control the functional facilities of existing urban roads is an important means to solve the current urban traffic congestion problem.The arterial road traffic coordination control technology has become one of the efficient,economical and practical solutions to the current contradictions due to its advantages of improving the efficiency of urban arterial road vehicles,reducing delays and parking times,etc.First,this paper studies the influencing factors of the coordinated control of urban arterial road traffic signals,introduces the green wave coordinated control parameters,control methods and performance indicators,and analyzes the types and acquisition methods of signal control data in the vehicle-road collaborative environment,and discusses the vehicle-road Green wave control changes in a collaborative environment.Secondly,it conducts in-depth research and analysis on the coordinated control method of the main line based on the characteristics of speed fluctuations,and establishes a model to analyze the relationship between the arrival times of various vehicles under the influence of speed fluctuations.At the same time,taking the relationship between the start and end time of the green light of the intersection coordinated phase and the width of the phase difference fluctuation as a constraint condition.Coordinated control method,this method is applicable to the trunk line coordination method including asymmetrical release phase and superimposed phase,which can significantly improve the traffic efficiency of urban trunk road vehicles.Finally,through comparative analysis of calculation examples,the pros and cons of the three green wave belt design schemes are studied.At the same time,by comparing the green wave time-distance diagrams of different green wave band schemes and VISSIM simulation,the control effects of different green wave band design schemes are compared and analyzed.The results show that the two methods of controlling the start of the green light and the control of the green light ending time are more delayed The reduction of 20%and 10%,and the effective reduction of the number of stops by 30.77%and 14.29%,respectively,indicate that the green wave belt coordinated control scheme designed by this method is the most effective.